Incidental catches of endangered (Phocoena phocoena) and vulnerable (Delphinus delphis) cetaceans and catch composition of turbot bottom gillnet fisheries in the southeastern Black Sea, Turkey

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dc.authoridKose, Ozay/0000-0002-3565-160X
dc.authoridBilgin, Sabri/0000-0003-0155-8981
dc.authoridYESILCICEK, TUNCAY/0000-0002-3236-8227
dc.contributor.authorBilgin, Sabri
dc.contributor.authorKose, Ozay
dc.contributor.authorYesilcicek, Tuncay
dc.date.accessioned2025-03-23T19:27:25Z
dc.date.available2025-03-23T19:27:25Z
dc.date.issued2018
dc.departmentSinop Üniversitesi
dc.description.abstractThe present study summarizes information on the incidental catches of cetaceans and the catch composition of turbot bottom gillnet fisheries between March 2010 and September 2011 along the Rize coast in the southeastern Black Sea, Turkey. A total of 723 specimens (133 Scophthalmus maeoticus, 507 Raja clavata, 8 Squalus acanthias, 71 Phocoena phocoena, 4 Delphinus delphis) were recorded from 136 turbot gill net fishing operations. The 'danger index' or catch per unit effort (CPUE, individuals per km. day of netting) for cetaceans was 0.09 +/- 0.028 in 2010, 0.15 +/- 0.032 in 2011 and 0.13 +/- 0.023 overall for P. phocoena and < 0.003 overall for D. delphis. Monthly CPUE values for target S. maeoticus and non-target species R. clavata, and P. phocoena were similar in all years. An increasing CPUE trend between April and June was evident for target and non-target species in 2010 and 2011. The CPUE of P. phocoena was estimated highest in May as 0.18 +/- 0.088 in 2010 and in April as 0.26 +/- 0.086 in 2011. A similar pattern was evident for S. maeoticus and R. clavata. One-way ANOVA showed that no statistical significant difference of target and non-target species CPUE among 2010, 2011 and all data (P > 0.05). No new net damage due to cetacean interactions with the turbot gill nets was detected.
dc.description.sponsorshipRecep Tayyip Erdogan University, Scientific Research Project [BAP 2010.103.03.2]
dc.description.sponsorshipThe authors thank fishermen Sami Akmermer, Kazim Akmermer Ugur Akmermer and Ahmet Kalkavan for their help during the field studies and two anonymous referees for their suggestions and criticism that clearly improved an earlier version of this manuscript. This study was supported by the Recep Tayyip Erdogan University, Scientific Research Project (BAP 2010.103.03.2).
dc.identifier.doi10.21411/CBM.A.E3AED15B
dc.identifier.endpage577
dc.identifier.issn0007-9723
dc.identifier.issn2262-3094
dc.identifier.issue6
dc.identifier.scopusqualityQ3
dc.identifier.startpage571
dc.identifier.urihttps://doi.org/10.21411/CBM.A.E3AED15B
dc.identifier.urihttps://hdl.handle.net/11486/4889
dc.identifier.volume59
dc.identifier.wosWOS:000455002200009
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherCahiers De Biologie Marine
dc.relation.ispartofCahiers De Biologie Marine
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectTurbot gillnet
dc.subjectCetaceans
dc.subjectHarbour porpoise
dc.subjectBy catch
dc.subjectBlack Sea
dc.titleIncidental catches of endangered (Phocoena phocoena) and vulnerable (Delphinus delphis) cetaceans and catch composition of turbot bottom gillnet fisheries in the southeastern Black Sea, Turkey
dc.typeArticle

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